Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Productivity of Some Selected Rice Cultivars Under Elevated Co2 and High Temperature Condition

J. Aktar
MS student
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

K. M. S. Haque
MS Student
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

M. M. Haque
Professor
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted to evaluate the effect of elevated CO₂ and high temperature on physiology, growth and productivity of some popular rice cultivars. Nine rice cultivars viz. moti, binni, khaskani, bunsha, maloti, shakkorkhora, bashful chikon, jhumur and one unknown were grown in four conditions. The growing conditions were open top chamber (OTC) with elevated CO₂ (570 ±50 ppm), OTC with ambient CO₂ (~360 ppm), OTC with high temperature (2^oC high) and field condition. Elevated CO₂ increased grain yield in all the rice cultivars due to increase in panicle number. However, there were varietal differences in response to elevated CO₂ and high temperature which indicated the potential good genetic materials that would be better to adapt in future high CO₂ warmer world.

Keywords: High temperate, elevated CO2, stacking, aromatic rice cultivation

Location: Experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur

Start Date: 00-00-2002

End Date: 00-00-2002

Program Area: Risk Management in Agriculture

Commodity: Rice

Objectives:

To evaluate the effect of elevated CO₂ and high temperature on physiology, growth and productivity of some popular rice cultivars.

Methodology:

A field experiment was carried out at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during the rainy season of 2002. Average air temperature ranged from 30.18^oC (maximum) to 19.86^oC (minimum) and total rainfall recorded 744.6 mm during the study period (August to December 2002). The soil type of the experimental field belongs to the shallow red-brown terrace type of Salna series. The soil is characterized by poor fertility and impeded internal drainage. Nine selected rice varieties viz. Moti, Binni, Khaskani, Bunsha, Maloti, Shakkorkhora, Bashful chikon, Jhumur and Unknown were grown in four conditions. The growing conditions were: Open top chamber (OTC) with elevated CO₂ (570 ±50 ppm), OTC with ambient CO₂ (~360 ppm), OTC with ambient CO₂ + 2^oC temperature and Open field (~360 ppm CO₂). Construction procedure of OTC was followed. The OTC (area 9 m²) was made of an iron frame that installed on the ground which was covered with transparent polyvinyl chloride sheet with a frustum at the top to deflect air and prevent the reduction of desired CO₂ within the chamber. The CO² gas was supplied to the chambers from the CO₂ gas cylinder. The air blowers with 12 inch in diameter were fitted at the base of the chamber, which thoroughly mixed the supplied CO₂ gas with atmospheric air and blew the gas mixture towards the chamber tunnel. One of the chambers had an electrical device for increasing inside air temperature up to 2^oC than more from the atmospheric air temperature. For making this, an electrical heater was placed adjacent to the chamber and continuous increment of chamber temperature was made by regulating the device kept outside of the chamber. Every OTC had a door for entrance into the chamber to manage the crop properly. The land was prepared very well by disc plough followed by harrowing and laddering. The weeds and stubble were removed; drains were made around each OTC and field. Triple super phosphates, muriate of potash, gypsum and zinc sulphate were applied as the sources of P₂O₅, K₂O, S and Zn at the rate of 100, 115, 110, and 10 kg ha^-1 respectively. Urea was applied at three installations first at 8 Days after transplanting, second at 20 days after transplanting and third at 45 Days after transplanting. 30-days old seedlings of all the varieties were transplanted on 31 July 2002. One seedling per hill was used by maintaining 25 cm row to row and 10 cm plant to plant distance in the well prepared land. There are 20 hills for each variety within each treatment. Gape filling was done with the even aged seedling within one week of transplanting. Several cultural operations such as weeding, irrigation and application of pesticide were done whenever necessary. Standing water of 2 to 4 cm was maintained in the field until the crops attained hard dough stage. The total number of panicle at maturity stage was counted. Both fertile and sterile spikelets per panicle were separately counted manually from all of the panicles of sample plant. From the filled grain of a plant 1000 grains were randomly counted by Multi-auto counter and the weight of these grains was measured. Grain yield was measured from 10 hills and adjusted with 14% moisture content. The findings were analyzed by partitioning the total variance with the help of computer by using MSTAT-C program. The treatment means were computed using Duncan’s Multiple Range Test.

Source of Information: Int. J. Sustain. Crop Prod. 1(1): 11-16, 2006

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed the stimulatory effects of CO₂ enrichment on productivity of nine rice cultivars. Contrary, high temperatures negate the stimulatory effect of elevated CO₂. However, varietal differences indicated the potential of rice cultivars to better adapt at warmer condition. Further study with more number of rice germplasm may be undertaken to evaluate the interactive effect of elevated CO₂ and high temperature for wider adaptation under warmer and higher CO₂ world.

Knowledge Management: Journal